查询词典 perturbation theory

Using Floquet theory and small amplitude perturbation method, we prove thatthe microorganism-eradication periodic solution is asymptotically stable if the impulsive periodsatisfies some conditions.

利用Floquet理论和小振幅干扰的方法证明脉冲周期满足一定条件时，微生物灭绝周期解是渐近稳定的。

Simultaneously, we identify that the perturbation of these operators by a small norm operator is still nonwandering; further, we can obtain the theory that every bounded linear operator can be decompositioned into nonwandering operators.

同时，证明了这些算子经一小扰动后，可保持它们的非游荡性不变；进而可获得有界线性算子关于非游荡算子的分解理论。

In modern physics research, the calculus of variations has a broad application of law. As a solid mechanics, structural mechanics and computational mechanics of the theoretical foundation, it has important value in theory and practice on the mechanics; Variation method ruled out the perturbation of the restrictions can be widely used in many state-level and the state function in the calculation in the optical; Calculus of variations can be calculated with the parameters, we can guarantee the reliability of the results, can effectively reduce the workload of calculation, It can be said that the applications of calculus of variations are very broad.

在现代的物理学研究中，变分法有着广泛的应用：在力学上，变分法作为固体力学、结构力学及计算力学的理论基础，在理论上和实践上都有重要的价值；在光学上，变分法排除了微扰法的限制，可以广泛应用于诸多定态能级和态函数的计算中；在量子力学的应用中，具有可算出系统的参数，既可以保证计算结果的可靠性，又能有效地减少计算的工作量等的优点，可以说变分法的应用领域十分广阔。

Specifically, there are three kinds:(1) constant variation method to track two-body problem the root number of variables to establish perturbed equation;(2) coordinate perturbation method in order to track objects in real position and the location of an intermediate orbit perturbation differential equation as a variable to establish;(3) transformation theory, through a series of canonical transformation to reduce the order of the equations of motion to make it a more simple form.

具体做法有三种：（1）常数变异法，以二体问题轨道根数为变量建立摄动方程；（2）坐标摄动法，以天体在实际轨道上的位置与某一中间轨道上的位置差作为变量建立摄动方程；（3）变换理论，通过一系列正则变换，降低运动方程的阶数，使其具有更简单的形式。

Based on the fundamental theory of the cable-prestressed steel truss established in paper [1], the inversive iterative perturbation equations which can be used to determine the stiffeness of elements of the prestressed steel truss with elastic supports are put forward by using the principle of matrix perturbation and introducing the concepts of the combined elements and stiffeness factors.

本文基于文献[1]所建立的拉索式预应力钢桁架基本理论，通过引入组合单元和刚度变化因子，利用矩阵摄动原理建立了以结点竖向位移为约束，以确定弹性支承多次张拉预应力钢桁架各类单元刚度为目标的反演摄动迭代方程。

Of your text book to complement our discussion of Heavy Mesons in Chiral Perturbation theory.

阅读教材第五章以补充关於手则微扰理论中重介子的讨论。

The excluded volume effect of nucleons is studied by calculating the first order self-energy of the nucleon in nuclear matter with perturbation theory as the volume of nucleons is considered, then its influence on the equation of state of nuclear matter is discussed.

在相对论平均场框架内计算了核子体积对核物质中核子自能的一级微扰修正，并进一步讨论了这种修正对核物质状态方程的影响。

Unfortunately, however, the simple WKB approximation may be inapplicable to steep-sided profiles (e.g., proton exchanged or epitaxially grown) where, for these almost square cases, it is more appropriate to use a perturbation theory approach.

但不幸的是，简单的WKB近似可能不适用于陡峭片面概况情况下，这些几乎平方米情况下，它更适合使用微扰理论方法。

The results of the decomposition of interaction energy according to SAPT2 show that the electrostatic and induction forces dominate the intermolecular interaction, and there is a good correlation between induction forces and charges transfer.

对称性匹配微扰理论(SAPT， Symmetry Adapted Perturbation Theory)能量分解结果表明，在分子间相互作用中，静电作用与诱导作用占主导地位，而诱导作用与复合物的电荷转移之间具有良好的正相关性。

This paper has analyzed alkali metals atom s eccentric Zeeman effect with fine structure at magneto - static field by using perturbation theory , and derived the energy s ecumenical expression of energy level splitting when eccentric Zeeman effect happened,and given the certification by the special example of Na atom.

利用微扰论分析了碱金属原子在静磁场中有精细结构时的反常塞曼效应，推导出了发生反常塞曼效应时能级分裂的能量一般表达式，并且由Na原子的特例给出了证明。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。